I'm convinced I had serotonin syndrome last year after the doc accidentally dosed me high. I had headaches, chills, couldn't keep my eyes closed relaxed-I'd mash them shut, and grind my teeth involuntarily, had rolling massage like feelings over my body persistently, was muddled and thinking through certain sentences felt like a force of will, was light and sound sensitive. I felt acutely aware of every one of these sensations in a way I've never been before. It was plenty unpleasant for me, to say the least. But I don't think this is typical of coming off a normal dose, etc.